64392040

素因数分解:

$2^3\times 5^1\times {\mathrm{1609801}}^1$

素因数の和:1609812

約数の個数: 16

約数和(自身を含む): 144882180

約数和(自身を除く): 80490140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1609801, 3219602, 6439204, 8049005, 12878408, 16098010, 32196020, 64392040]

約数ペア:

[(1, 64392040), (2, 32196020), (4, 16098010), (5, 12878408), (8, 8049005), (10, 6439204), (20, 3219602), (40, 1609801)]